path: root/bin/erancid.in

#!@PERLV_PATH@
##
## Hacked version of rancid for ADC EZT3 series muxes. Only tested
## with switch software 1.50 so far - terry@tmk.com
##
##
## Copyright (C) 1997 by Henry Kilmer.
## All rights reserved.
##
## This software may be freely copied, modified and redistributed without
## fee for non-commerical purposes provided that this copyright notice is
## preserved intact on all copies and modified copies.
##
## There is no warranty or other guarantee of fitness of this software.
## It is provided solely "as is". The author(s) disclaim(s) all
## responsibility and liability with respect to this software's usage
## or its effect upon hardware, computer systems, other software, or
## anything else.
##
##
#
#  RANCID - Really Awesome New Cisco confIg Differ
#
# usage: rancid [-d] [-l] [-f filename | $host]
#
use Getopt::Std;
getopts('dflm');
$log = $opt_l;
$debug = $opt_d;
$file = $opt_f;
$host = $ARGV[0];
$clean_run = 0;
$found_end = 0;
$timeo = 90;			# clogin timeout in seconds

# This routine is used to print out the router configuration
sub ProcessHistory {
    my($new_hist_tag,$new_command,$command_string,@string)=(@_);
    if((($new_hist_tag ne $hist_tag) || ($new_command ne $command))
       && defined %history) {
	print eval "$command \%history";
	undef %history;
    }
    if (($new_hist_tag) && ($new_command) && ($command_string)) {
	if ($history{$command_string}) {
	    $history{$command_string} = "$history{$command_string}@string";
	} else {
	    $history{$command_string} = "@string";
	}
    } elsif (($new_hist_tag) && ($new_command)) {
	$history{++$#history} = "@string";
    } else {
	print "@string";
    }
    $hist_tag = $new_hist_tag;
    $command = $new_command;
    1;
}

sub numerically { $a <=> $b; }

# This is a sort routing that will sort numerically on the
# keys of a hash as if it were a normal array.
sub keynsort {
    local(%lines)=@_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $key (sort numerically keys(%lines)) {
	$sorted_lines[$i] = $lines{$key};
	$i++;
    }
    @sorted_lines;
}

# This is a sort routing that will sort on the
# keys of a hash as if it were a normal array.
sub keysort {
    local(%lines)=@_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $key (sort keys(%lines)) {
	$sorted_lines[$i] = $lines{$key};
	$i++;
    }
    @sorted_lines;
}

# This is a sort routing that will sort on the
# values of a hash as if it were a normal array.
sub valsort{
    local(%lines)=@_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $key (sort values %lines) {
	$sorted_lines[$i] = $key;
	$i++;
    }
    @sorted_lines;
}

# This is a numerical sort routing (ascending).
sub numsort {
    local(%lines)=@_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $num (sort {$a <=> $b} keys %lines) {
	$sorted_lines[$i] = $lines{$num};
	$i++;
    }
    @sorted_lines;
}

# This is a sort routine that will sort on the
# ip address when the ip address is anywhere in
# the strings.
sub ipsort {
    local(%lines)=@_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $addr (sort sortbyipaddr keys %lines) {
	$sorted_lines[$i] = $lines{$addr};
	$i++;
    }
    @sorted_lines;
}

# These two routines will sort based upon IP addresses
sub ipaddrval {
    my(@a) = ($_[0] =~ m#^(\d+)\.(\d+)\.(\d+)\.(\d+)$#);
    $a[3]+256*($a[2]+256*($a[1]+256*$a[0]));
}
sub sortbyipaddr {
    &ipaddrval($a) <=> &ipaddrval($b);
}

# This routine parses "show version"
sub ShowVersion {
    print STDERR "    In ShowVersion: $_" if ($debug);

    ProcessHistory("COMMENTS","keysort","A1",
	"- Chassis type:EZT3 - an ADC EZT3 M13 multiplexor\n");

    while (<INPUT>) {
	tr/\015//d;
	last if(/Active\) >/);
	next if(/^(\s*|\s*$cmd\s*)$/);

	/Boot Version (\S*)/ &&
	    ProcessHistory("COMMENTS","keysort","G1",
		"- ROM Bootstrap: $1\n") && next;
	/Software Version (\S*)/ &&
	    ProcessHistory("COMMENTS","keysort","F1",
		"- Software: $1\n") && next;
    }
    return(0);
}

# This routine parses "show module"
sub ShowModule {
    print STDERR "    In ShowModule: $_" if ($debug);

    # eat the header line
    $junk = <INPUT>;

    ProcessHistory("SLOT","","","-\n");

    # now just copy it verbatim to the history file
    while (<INPUT>) {
        tr/\015//d;
        last if(/Active\) >/);
	last if(/^$/);
	chop;
	ProcessHistory("SLOT","","","-$_\n");
    }
    ProcessHistory("SLOT","","","-\n");
}

# This routine processes a "write term"
sub WriteTerm {
    print STDERR "    In WriteTerm: $_" if ($debug);

    # eat the header line
    $junk = <INPUT>;

    # now just copy it verbatim to the history file
    while (<INPUT>) {
        tr/\015//d;
        last if(/Active\) >/);
	chop;
	if (/^\s*snmp/ && defined($ENV{'NOCOMMSTR'})) {
	    /snmp (getcomm|setcomm|trapcomm)(\s+)(\S*)/ &&
	    ProcessHistory("","","","-   snmp $1$2\"<removed>\"\n") && next;
	}
	# believe it or not, "-" is the "whole line is comment" command
	ProcessHistory("","","","$_\n");
    }
    $found_end = 1;
    return(1);
}

# dummy function
sub DoNothing {print STDOUT;}

# Main
%commands=(
	'version'		=> "ShowVersion",
	'equipment'		=> "ShowModule",
	'config'		=> "WriteTerm",
);
# keys() doesnt return things in the order entered and the order of the
# cmds is important (show version first and write term last). pita
@commands=(
	"version",
	"equipment",
	"config",
);
$cisco_cmds=join(";",@commands);
$cmds_regexp=join("|",@commands);

open(OUTPUT,">$host.new") || die "Can't open $host.new for writing: $!\n";
select(OUTPUT);
# make OUTPUT unbuffered if debugging
if ($debug) { $| = 1; }

if ($file) {
    print STDERR "opening file $host\n" if ($debug);
    print STDOUT "opening file $host\n" if ($log);
    open(INPUT,"<$host") || die "open failed for $host: $!\n";
} else {
    print STDERR "executing elogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($debug);
    print STDOUT "executing elogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($log);
    if (defined($ENV{NOPIPE})) {
	system "elogin -t $timeo -c \"$cisco_cmds\" $host </dev/null > $host.raw 2>&1" || die "elogin failed for $host: $!\n";
	open(INPUT, "< $host.raw") || die "elogin failed for $host: $!\n";
    } else {
	open(INPUT,"elogin -t $timeo -c \"$cisco_cmds\" $host </dev/null |") || die "elogin failed for $host: $!\n";
    }
}

ProcessHistory("","","","- RANCID-CONTENT-TYPE: ezt3\n-\n");
ProcessHistory("COMMENTS","keysort","B0","-\n");
ProcessHistory("COMMENTS","keysort","F0","-\n");
ProcessHistory("COMMENTS","keysort","G0","-\n");
while(<INPUT>) {
    tr/\015//d;
    if (/Logging out$/) {
	$clean_run=1;
	last;
    }
    if (/^Error:/) {
	print STDOUT ("$host elogin error: $_");
	print STDERR ("$host elogin error: $_") if ($debug);
	$clean_run=0;
	last;
    }
    while (/Active\) >\s*($cmds_regexp)\s*$/) {
	$cmd = $1;
	if (!defined($prompt)) {
	    $prompt = ($_ =~ /^([^#]+#)/)[0];
	    $prompt =~ s/([}{)(\\])/\\$1/g;
	}
	print STDERR ("HIT COMMAND:$_") if ($debug);
	if (! defined($commands{$cmd})) {
	    print STDERR "found unexpected command - \"$cmd\"\n";
	    $clean_run = 0;
	    last;
	}
	$rval = &{$commands{$cmd}};
	delete($commands{$cmd});
	if ($rval == -1) {
	    $clean_run = 0;
	    last;
	}
    }
}
print STDOUT "Done $logincmd: $_\n" if ($log);
# Flush History
ProcessHistory("","","","");
# Cleanup
close(INPUT);
close(OUTPUT);

if (defined($ENV{NOPIPE})) {
    unlink("$host.raw") if (! $debug);
}

# check for completeness
if (scalar(%commands) || !$clean_run || !$found_end) {
    if (scalar(%commands)) {
	printf(STDOUT "missed cmd(s): %s\n", join(',', keys(%commands)));
	printf(STDERR "missed cmd(s): %s\n", join(',', keys(%commands))) if ($debug);
    }
    if (!$clean_run || !$found_end) {
	print STDOUT "End of run not found\n";
	print STDERR "End of run not found\n" if ($debug);
	system("/usr/bin/tail -1 $host.new");
    }
    unlink "$host.new" if (! $debug);
}